31301302312 has 48 divisors (see below), whose sum is σ = 68296972500. Its totient is φ = 13409932032.

The previous prime is 31301302271. The next prime is 31301302313. The reversal of 31301302312 is 21320310313.

It can be written as a sum of positive squares in 2 ways, for example, as 31220769636 + 80532676 = 176694^2 + 8974^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31301302312.

It is not an unprimeable number, because it can be changed into a prime (31301302313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1182114 + ... + 1208302.

Almost surely, 2^31301302312 is an apocalyptic number.

It is an amenable number.

31301302312 is an abundant number, since it is smaller than the sum of its proper divisors (36995670188).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31301302312 is a wasteful number, since it uses less digits than its factorization.

31301302312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29258 (or 29247 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 31301302312 its reverse (21320310313), we get a palindrome (52621612625).

The spelling of 31301302312 in words is "thirty-one billion, three hundred one million, three hundred two thousand, three hundred twelve".